Electric locomotive.



No. 823,968. PATENTED JUNE 19, 1906. E. D. PRIEST. ELECTRIC LOGOMOTIVE.

APPLICATION FILED JAN.28, 1905.

. a inventor: 5 @273- E Edward 0 Priest.

Witnesses;

. moving UNITED STATES EDWARD D. PRIEST, OF SCI-IENECTADY, NEW YORK,ASSIGNOR TO GEN- ERAL ELECTRIC COMPANY, A

CORPORATION OF NEW YORK.

ELECTRIC Locomo'rlvs.

Specification of Letters Patent.

Patented June 19, 1906.

To all whom it may concern:

Be it known that I, EDWARD D. Pnnis'r, a citizen of the United States,resid' at Schenectad county of Schenectady, tate of New Yor haveinvented certain new and useful Improvements in Electric Locomotives, ofwhich the following is a specification.

locomotives, and more particularly to means for su porting thedriving-motors in operative re ation to the driving-axles.

Where it is desired to mount the motor-armature directly u on thedriving-axle of a locomotive, the fiel -magnet structure must besupported in a manner to maintain a clearance between the poleieces andthe armature notwithstanding t e movements of the driving-axle relativeto the locomotiveframe. In case the motor is of the type in which thefield-magnet structure fully or partially surrounds the armature it isimpracticable to sup ort the field structure from the locomotiveame, forthe reason that the airap produced in such an arrangement would e toogreat to enable the motor to operate efficient y. It is furthermoreundesirable to have the field-magnet structure carried as a dead-weightu on the ,axle between the jmain bearings o the locomotive or to providethe independent bearings u on the axle for the field-ma net structure w'ch this arrangement wou d necessitate.

In my Patent No. 625,802, granted May 20, 1899, for railway-motor I haveillustrated one form of support for the field-magnet structure ormotor-frame whereby it is mounted directly upon the axle-boxes, therebyavoiding the necessity of separate supporting-bearings for the field-manet structure and reportion of the axle.

In one of its aspects the present invention may be considered asrelating to improvements in the motor suspension illustrated in myaforesaid prior patent.

In another aspect the present invention contem lates a construction andarrangement 0 the parts of a motor suspension in such a manner thatundue strains in the various members are prevented.

The present mventlon consists, further, in certain structural details ina motor Suspenthe dead-weight from the middle sion to be hereinafterdescribed, and particularly pointed out in the claims.

The present invention is illustrated in the accompanying drawings, inwhich- Figure 1 is a side elevation of a locomotive frame mounted u onfour sets of drivingwheels, each set 0 which is driven by a motorsuspended in accordance with the present The present invention relatesto electric invention. 2 is a side elevation, upon an enlarged scale, ofone motor and the being omitted in or er to clearly show the parts. Fig.3 is a view, partly in section and partiy in elevation, of the partsshown in Fig. 2. igs. 4 and 5 are views correspondin to 2 and 3,respectively, illustrating ther modified forms of the present invention;and Figs ing further modifications.

Similar reference characters will be used throughout thespecification-and drawings to indicate like arts.

Reference eing had to the drawings, A re resents a locomotive -frame, BB B B drivers attached to axles b b b b, and O O O C motors arranged torotate the driving-wheels. Each of the motors consists of an armature orrotor 1, mounted directly upon a drivingaxle, and a field structure orstator 2. The part 2 comprises the fixed portions of the motor and willbe hereinafter designated the motor-frame. The frame A is yieldinglysupported upon the driving-axles thro h elhptic springs 3, which restupon the ax eboxes 4 and upon the ends of which the frame is hung bymeans of links 5 and 6. All these parts may have any usual or desiredconstruction, since they in themselves constitute no part of the presentinvention. The wheels are shown arranged outside of the axle-boxes; butthe present invention is equally applicable to constructions in whichthe axle-boxes are outside of the wheels. Instead of causing themotor-frame to rest, as it were, upon the top of the axle-boxes, as inmy prior patent reviously referred to, I

ropose to suspen or hang it from the axlebox in such a manner that thepoint of connection of the suspending means therewith is located belowthe center of gravity thereof, whereby a very stable form of support isse- T r iiad e flexible, so that the motor-frame is cameans forsuspendin it, one of the drivers I 6 and 7 are views of detailsshowcured. 'At the same time the suspension is pable of slight movementsin any direction, avoiding unnecessary strains in the component parts.

In Figs. 2 and 3 the suspending means consists of hangers 7 and 8,supported from ears 9 and 10, secured to or forming part of theaxle-boxes. These hangers are in turn connected to lugs or bosses 11 and12, proj ecting from the lower halves of the motor-frames. The hanger 7is illustrated as hung from a pintle 13, carried by double ears 9 and 9the upper portion of the hanger being forked, as at 14', to enable it topass the lower chord a of the locomotive-frame. The lower end of'thehanger 7 is screw-threaded, as at 15. The threaded portion 15 extendsthrough the lug 11, and by adjusting the nuts 16 and 17' on oppositesides of the lug 11 the motor-frame may be properly positioned withrespect to the armature. If desired, cushions or springs 18 and 19 maybe arranged between the nut 16 and the lug l1 and the nut 17 and lug 11respectively, in order to provide for taking up the jar occasioned bythe travel of the locomotive. Fourhan ers,simi'- lar to hanger 7, may beemploye for suspending each motor--namely, two upon each axle-box. Thesupporting-hangers may all be similar to hanger 8, which differs fromhanger 7, in that the pivotal connection is adjacent the lug on themotor-frame instead of adjacent the supporting-ear of the axle-box. Thehan er 8 consists of a yoke 20, which surrounds t e chord a, of thelocomotive-frame and also the ear 10 upon the axle-box. To the lower endof the yoke 20 is pivotally secured the screw-threaded bolt 21, whichpasses through the lug 12 and which is provided with nuts 22 and 23 forengaging, respectively, with opposite sides of the lug 12. The upper endof yoke 20 may rest upon the ear 10, or a cushion 24 may be interposedbetween the yoke and the ear. The yoke is held in position upon the earby means of a bolt 25, which passes through the two members, and, ifdesired, a second cushion 26 may be interposed between the head of thebolt and the to of the yoke, whereby the yoke is free to vi rateslightly in either direction from its normal position without strainingthe bolt. Transverse beams 27 are secured to the locomotive-frame Aadjacent the motor-frames, whereby upon reversing the motor while thelocomotive is moving or otherwise loading the motor suddenly themotor-frames may come into contact with the beams and relieve the strainupon the motor suspension.

In Figs. 4 and 5 the motor-frame is likewise suspended flexibly upon theears 9 and 10 of the axle-box; but the structural details are somewhatdifferent from those shown in Figs. 2 and 3. The motor-frame instead ofhaving the suspending-1n s 11 and 12 has secured thereto a pair of yo es27, which pass across the ends thereof. The hangers 7 are pivotally hungfrom the ears 9 by means of the pintles 28 28, and the lower ends of thehangers 7 are formed yoke shape, as at 29, in order to pass the chord a.The yokes 27 pass directly through the yokes 29 and are properlypositioned therein in any suitable manner, as by means .of keys 30,which engage with the yokes 27 and with the two arms of the yokes 29.Cushions 31 may be interposed between yokes 27 and the hangers 7.

In Figs. 6 and 7 the motor-frame is illustrated as being provided withlugs 32,. which roject into yokes 33 in the lower part of the angers 7In all of the modifications illustrated the motor-frame isefl'e'ctuall'y sup orted in proper relation to the armature and partakesof all the bodily movements of the armature due to the unevenness of theroad-bed or other causes resulting from the nature of the use to whichthe motor is put; but the motor-frame is not rigidly supported in thesense that all shocks and vibrations must be borne by an unyieldingstructure, provision bein made, on the other hand, for permitting theparts to yield to some extent, as occasion may require.

Although I have described the present invention with particularity asembodied in some of its preferred forms, yet I do not intend to limitthe resent invention to the structural details 'lustrated' anddescribed, except to the extent specified in the appended 0 aims, sincein its broader aspects the present invention may be embodied in variousforms other than those illustrated.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. In an electric locomotive, a locomotiveframe, a drivingaxle, amotor-armature mounted upon and supported by said axle, a bearing memberbetween the locomotive frame and axle, and a motor-frame suspend-' edfrom said bearing member. 2. In an electric locomotive, a locomotiveframe, a d'rivingaxle, a motor-armature mounted upon and supported bysaid axle, a

bearing member between the locomotive frame and axle, and a motor-frameadjustably suspended from said bearing member.

3. In an electric locomotive, a locomotiveframe, a driving-axle, amotor-armature mounted upon said axle, a bearing member between thelocomotive-frame and axle, a motor-frame, and suspending'means for-saidmotor-frame supported bysard bearing member and connected to saidmotor-frame at a point or points below the center of gravity thereof.

4. In an electric locomotive, a locomotiveframe, a driving-axle,amotor-armature mounted uponsaid axle, a bearing member arranged betweenthe axle and the locomotive-frame, a motor-frame, and suspending saidbearing member and engaging with the motor-frame adjacent the lower endthereof.

5. In an electric locomotive, a locomotiveframe, a drivingaxle, amotor-armature mounted upon and supported by said axle, a bearing memberarranged between the locomotive-frame and axle, a motor-frame, and aflexible connection between said motorframe and said bearing member.

6. In an electric locomotive, a drivingaxle, a motor-armature supportedthereon, a

motor-frame surrounding or partially sur.

9. In an electric locomotive, a frame, a

driving-axle, a motor-armature mounted upon said axle, a bearing memberarranged between the frame and axle, a motor-frame, and a plurality ofhangers secured to the said bearin member and to the motor-frame atpoints elow the center of gravity thereof.

10. In an electriczlocomotive, a locomotiveframe, a driving-axle, amotor armature mounted upon said axle, amotor-frame yieldin'glysupported from said axle, and stops carried by the locomotive-frame forlimiting the mxgvement of the motor-frame upon the a e.

In Witness whereof I have hereunto set my hand this 25th day of January,1905.

EDWARD D. PRIEST. Witnesses:

BENJAMIN B. HULL, HELEN ORFORD.

